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public static String getdata(String arg) throws Exception    {        try        {	    // Check to see that a command parameter was entered            if (arg == null || arg == "")            {                 // Print message, pause, then exit                 System.err.println ("Invalid command parameters");                 System.in.read();                 System.exit(0);            }            // Create an URL instance            URL url = new URL(arg);            // Get an input stream for reading            InputStream in = url.openStream();            // Create a buffered input stream for efficency            BufferedInputStream bufIn = new BufferedInputStream(in);			String output = new String("");            // Repeat until end of file            for (;;)            {                int data = bufIn.read();                // Check for EOF                if (data == -1)                    break;                else {					output = output + data;				}            }			return output;        }        catch (MalformedURLException mue)        {            System.err.println ("Invalid URL");        }        catch (IOException ioe)        {            System.err.println ("I/O Error - " + ioe);        }    }